This is just my opinion because i am not max level in gw2, but i find WoW way more "grindy" then gw2. It is nice to get experience from just about everything. Most people i know who played WoW, did not read the quest text. but they still had an idea of the game and story. I am not bashing WoW, i played it for a LONG time, but i lost focus in cataclysm because of the repetitiveness.
But i respect your opinion, as for now i enjoy this game immensely. I will not have a true feel of the game till i hit max level. After Rift and swtor, i am not going to say whether i like the game or not. But i can say rift, now has a decent end game. if they had the content they have now at release, they would be a bigger contender then what they currently are.